%div[declaration_payer]

  %span.label
    = f.check_box :do_not_remove_before_save, {}, true, false
    = f.hidden_field :user_id

    = f.label :do_not_remove_before_save, declaration_payer.user.firstname

  %span
    met 
    = f.text_field :additional_persons, :size => 1
    extra personen